Sheet-metal roofing



(No Model.)

J. J. KNOWLTON. SHEET METAL ROOFING.

No. 594,139. Patented Nov. 23,1897. I

710711277 yaw/17m.-

' l U NITED STATES PATENT Ounce.

JAMES J. KNOWLTON, OF OAKLAND, CALIFORNIA.

SHEET-METAL RVOOFIING.

SPECIFICATION forming of Letters Patent No. 594,139, dated November 23, 1897.

Application filed July 6, 1897. Serial No. 643,631. (No model.)

To all whom it may concern: 7 I 7 Be it known that I, JAMES J. KNOWLTON, a citizen of the United States, residing in the city of Oakland, in the county of Alameda and State of California, have invented certain new and useful Improvements in Sheet-Metal Roofing, of which the following is a specification.

This invention relates to improvements made in covering the roofs of buildings with sheet metal as a protection from the weather; and the same consists in the described construction of sheet-metal plates which by their form and construction are adapted to be laid and nailed in place in the same manner as the ordinary wooden shingle with overlapping ends and plain butt-joints, all as hereinafter fully set forth.

The following description explains at length the nature of my said improvements and the manner in which I proceed to construct, produce, and apply the same, reference being had to the accompanying drawings, forming part of this specification.

In the said drawings, Figure 1 is a perspective view of a hip-roof with one side covered with my improved roofing-plates and another side with the plates partly laid in place. Fig.

2 is a perspective view of two of the plates that are used to cover the hips or ridges of the roof. Fig. 3 is a similar View of two of the plates that cover the valleys or depressions at the meeting angles of the slopes. Fig. 4 is a perspective in detail of the plates that cover the flat portions of the roof.

The three separate forms of plates shown in the accompanying drawings go to form the complete covering for a slanting roof with hips and valleys.

The plate A is constructed of rectangular shape and of any desired-width and length, and in most cases of smaller dimensions than the ordinary wooden shingle for the purpose of utilizing to the best advantage without waste the sheet-tin out of which the plates may be cut.

Each plate A is formed with an offset cl across the upper end, which is produced by bending the edge portion of the plate first downward at right angles parallel with the edge and again upward at right angles or to a degree sufficient to raise the heel or top portion of the plate clear of the roof and allow the lower portion of the plate in one row or layer to lie closely upon the plates in the row or layers beneath.

The plate B is cutout of the sheet metal on angular lines that produce an irregular double-triangular or lozenge shape with pointed top and bottom ends, as shown in Fig. 2, and it is bent through the middle and on the longer axis, so as to lie over the hip or ridge formed at the meeting angle of the two flat faces of the roof. By virtue of this shape the straight edges of the plate along the sides extend up and down the fiat sides of the roof and make a close butt-joint with the straight sides of the rectangular plates, and the bottom edges of the angular plates lie flush with the bot tom edges of the before-mentioned plates in the same course.

The olfset d is formed on the upper end of the plate B by cutting off the point on a reentering angle and parallel with the lower edges of the plate and then bending the metal at an angle in the same manner as before described to produce the offset in the roofingplate A.

The roofing-plate O to cover the valleys or depressions between two sloping faces of a roof are cut from the sheet metal on substantially the same outlines as the plate 13, excepting that the offset d is formed across the broader end, which in this case is the upper end of the plate, while the acute point at the junction of the angular sides is left on the bottom of the plate. The shape of this plate when bent through the middle is shown in the detail view Fig. 3, so that the sides of these valley-plates, as well as the hip-plates, will make close butt-joints with the sides of the rectangular plates A, that are laid in the same course.

In covering a roof with these plates as thus formed or constructed the work is begun and carried across the surfaces in the same manner as in laying a shingle roof, beginning at the bottom and carrying the work upward to the ridge. The plates are laid to break joints and are fastened to place by nailing the ofiset edge closely down to the roof. The last course at the ridge is covered in the usual way by a saddle-plate or cresting.

Having thus fully described my invention,

what I claim as new, and desire to secure by Letters Patent, is-

The herein-described sheet-metal covering for roofs consisting of the roofing-plates A of rectangular shape provided with a bend or offset across the upper end for nailing the plate to the roof-surface, the hip-plates B of double-triangular shape having a bend along the middle and an offset across the upper end, and the valley-plates G of corresponding angular shape provided with an offset across the Wider end, the sides of the said angular plates B and C being adapted by the form of the plates to lie parallel with and form buttjoints with the perpendicular edges of the rectangular roofing-plates, substantially as set forth.

In. testimony that I claim the foregoing I have hereunto set my hand and seal.

JAMES J. KNOWLTON. [n s] Witnesses:

G. W. M. SMITH, CHAS. E. KELLY. 

